How severe is CVE-2021-43578?

CVE-2021-43578 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-43578 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43578?

CVE-2021-43578 affects Jenkins Squash Tm Publisher. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43578?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-43578 published?

CVE-2021-43578 was published on 2021-11-12 and last updated on 2026-06-17.

CVE-2021-43578

CVE-2021-43578 is a high-severity vulnerability in Jenkins Squash Tm Publisher with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jenkins Squash Tm Publisher
Published: 2021-11-12
Last modified: 2026-06-17

Description

Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.

Frequently asked questions

What is CVE-2021-43578?: Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.
How severe is CVE-2021-43578?: CVE-2021-43578 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-43578 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43578?: CVE-2021-43578 affects Jenkins Squash Tm Publisher. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43578?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-43578 published?: CVE-2021-43578 was published on 2021-11-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:squash_tm_publisher:*:*:*:*:*:jenkins:*:*

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